Huntsworth Health appoints Tonic and nitrogen CEOs

Promotes Maryellen Royle and Jon Clark to the top roles

Global agency network Huntsworth Health has promoted two of its senior executives, appointing Maryellen Royle as chief executive officer of Tonic Life Communications and Jon Clark as chief executive officer of nitrogen.

Royle (pictured right) joined US-based Tonic Life Communications in 2009 as president of its North America operations, and will now take on responsibility for integrating and expanding the agency on a global scale.

Prior to this, she served in an executive management role at another of the Huntworth Health network's companies, Dorland Global Corporation.

Originally joining as account support in 1992, Royle held a number of increasingly senior positions at the agency before her move to Tonic.